System and method for providing automation of microprocessor analog input stimulation
a microprocessor and analog input technology, applied in the field of microprocessor testing systems, can solve problems such as limiting the ability of the microprocessor to perform other tasks related to the control field
Active Publication Date: 2019-10-03
HAMILTON SUNDSTRAND CORP
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- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The patent describes a controller system for an aircraft that includes a microprocessor with a sequencer and a plurality of sensor inputs. The system includes a plurality of stimulation circuits that are connected to the sensor inputs and can be controlled by a spare multiplexor control signal. The system can stimulate the sensor inputs to test their response and determine if they are healthy. The technical effect of this invention is to provide a more efficient and effective means for testing and validating the health of aircraft sensors.
Problems solved by technology
However, in existing controllers operation and control of a stimulation circuit requires substantial software overhead by the microprocessor, and can limit the ability of the microprocessor to perform other tasks related to the controls.
Method used
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[0029]FIG. 1 schematically illustrates an exemplary aircraft 10 including an electrical system 20 having a general aircraft controller 30. The general aircraft controller 30 is connected to multiple dedicated system controllers 40, each of which includes one or more microprocessors. The dedicated system controllers 40 are each connected to a corresponding sensor network 50 that includes one or more analog sensors configured to detect a characteristic of the system controlled by the corresponding dedicated system controller 40. It should be appreciated that the particular illustrated dedicated system controllers 40 are purely exemplary in nature, and a practical implementation could include any number of additional dedicated system controllers 40 and sensor networks 50, or less dedicated system controllers 40 and sensor networks 50, and still incorporate the testing system and method disclosed herein.
[0030]In order to accommodate the multiple analog inputs from the sensor network 50,...
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A controller system includes a microprocessor having a sequencer configured to output at least one spare multiplexor control signal, a memory, and a plurality of sensor inputs. At least one stimulation circuit is connected to a sensor signal line. The at least one stimulation circuit being connected to the at least one spare multiplexor control signal. The stimulation circuit is configured such that a state of the at least one spare multiplexor control signal controls a state of the stimulation circuit.
Description
TECHNICAL FIELD[0001]The present disclosure relates generally to microprocessor testing systems, and more specifically to a microprocessor including an automatic analog input stimulation for testing purposes.BACKGROUND[0002]Controller systems, such as those including microprocessors, frequently require analog inputs in order to perform the necessary control functions. By way of example, a microprocessor may be configured to receive multiple signals from analog sensors, with the resultant controls being at least partially based on the received signals. However, as is generally known in the art, microprocessors operate using digital data. In order to accommodate the analog signals, analog to digital converters are commonly used.[0003]Further, in some systems various functionalities of the microprocessor are tested by providing a known analog input to a given input pin. This is commonly achieved through the usage of a stimulation circuit connected to an analog input and configured to c...
Claims
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Login to View More IPC IPC(8): G01R31/317G05B23/02
CPCG01R31/31708G01R31/31723G05B23/02G01R31/31712G05B19/0428G05B23/0256
Inventor HOEGBERG, LON R.
Owner HAMILTON SUNDSTRAND CORP